Explanation of Plate III. 



Unless otherwise is stated, the specimens delineated are compressed. Direction of lateral 

 pressure is indicated by arrows placed on either side of the figures. 



Rastrites maximus Cakeuthees. 



Fig. 1. Imprint of a specimen in flattened relief; natural size. Heinrichsruhe. Collected by 

 the Author. 



Monograptus triangulatus Haekness, var. Raitzhainiensis Eisel. 

 Fig. 2—4. Natural size. Raitzhain. Collected by Mr. Eisel. 



Monograptus ureeolus Richtee. 



Fig. 5 — 8. Natural size. Raitzhain. Collected by Mr. Eisel. 

 » 9. » » Grobsdorf. Collected by Mr. Eisel. 



» 10. Portion of a slab, showing different fragments ; natural size. Grobsdorf. Collected by 

 the Author. 



Monograptus sp. 



Fig. 11 — 15. Natural size. Heinrichsruhe. Collected by the Author. 



Monograptus amphibolus Töenquist. 



Fig. 1(3— 19. Natural size. Kongslena. 

 > 20. Proximal part X 3. 5. Ibid. 

 » 21. Distal part )< 3. 5. Ibid. 



Originals collected by the Author. 



Monograptus eonvolutus Hisingee. 



Fig. 22. Natural size. Enån. 

 » 23. Distal part X 4. Råsnäset. 



Originals collected by the Author. 



Monograptus gemmatus Baeeande. 



Fig. 24, 25. Specimens preserved in relief. Kinnekulle. Collected by the Author. 

 » 2(3. Two specimens; natural size. Paitzdorf. Collected by Mr. Eisel. 

 » 27. Natural size. Ibid. Collected by Mr. Eisel. 



» 28. Part of the distal region; natural size. Litohlaw. Collected by the Author. 

 » 29. Part of the proximal region; natural size. Ibid. Collected by the Author. 

 » 30. Part of the proximal region X 4. Ibid. Collected by the Author. 



» 31. Part of the proximal region, preserved in relief, X 4. Kinnekulle. Collected by the 

 Author. 



